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authorJagan Teki <jagan@amarulasolutions.com>2018-07-20 12:44:00 +0530
committerJagan Teki <jagan@amarulasolutions.com>2018-08-23 17:31:24 +0530
commit14b6a07cf73c4f191bafefcece6132eab6cf740e (patch)
tree95ac122a7f03d97b14142be12c64f70db17dbc32 /drivers/usb
parent1034bcc26db6153aa86addfd69d68b275eb2223f (diff)
usb: musb-new: sunxi: Add proper musb exit support
musb have platform ops to do proper graceful exit, so add the exit call and move musb platform exit code instead of keeping it in driver remove. This make proper shutdown of musb where .remove will call disable, exit serially via musb_stop. Tested-by: Chen-Yu Tsai <wens@csie.org> # A33-OlinuXino Tested-by: Jagan Teki <jagan@amarulasolutions.com> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/musb-new/sunxi.c49
1 files changed, 28 insertions, 21 deletions
diff --git a/drivers/usb/musb-new/sunxi.c b/drivers/usb/musb-new/sunxi.c
index d909b9ea53..6cf9826cda 100644
--- a/drivers/usb/musb-new/sunxi.c
+++ b/drivers/usb/musb-new/sunxi.c
@@ -331,6 +331,33 @@ static int sunxi_musb_init(struct musb *musb)
return 0;
}
+static int sunxi_musb_exit(struct musb *musb)
+{
+ struct sunxi_glue *glue = to_sunxi_glue(musb->controller);
+ int ret = 0;
+
+ if (generic_phy_valid(&glue->phy)) {
+ ret = generic_phy_exit(&glue->phy);
+ if (ret) {
+ dev_err(dev, "failed to power off usb phy\n");
+ return ret;
+ }
+ }
+
+ if (glue->cfg->has_reset)
+ clrbits_le32(glue->reg_reset0, BIT(AHB_GATE_OFFSET_USB0));
+
+ if (glue->cfg->rst_bit)
+ clrbits_le32(glue->reg_reset0, BIT(glue->cfg->rst_bit));
+
+ clrbits_le32(&glue->ccm->ahb_gate0, BIT(AHB_GATE_OFFSET_USB0));
+ if (glue->cfg->clkgate_bit)
+ clrbits_le32(&glue->ccm->ahb_gate0,
+ BIT(glue->cfg->clkgate_bit));
+
+ return 0;
+}
+
static void sunxi_musb_pre_root_reset_end(struct musb *musb)
{
struct sunxi_glue *glue = to_sunxi_glue(musb->controller);
@@ -347,6 +374,7 @@ static void sunxi_musb_post_root_reset_end(struct musb *musb)
static const struct musb_platform_ops sunxi_musb_ops = {
.init = sunxi_musb_init,
+ .exit = sunxi_musb_exit,
.enable = sunxi_musb_enable,
.disable = sunxi_musb_disable,
.pre_root_reset_end = sunxi_musb_pre_root_reset_end,
@@ -463,29 +491,8 @@ static int musb_usb_remove(struct udevice *dev)
{
struct sunxi_glue *glue = dev_get_priv(dev);
struct musb_host_data *host = &glue->mdata;
- int ret;
-
- if (generic_phy_valid(&glue->phy)) {
- ret = generic_phy_exit(&glue->phy);
- if (ret) {
- pr_err("failed to exit %s USB PHY\n", dev->name);
- return ret;
- }
- }
musb_stop(host->host);
-
- if (glue->cfg->has_reset)
- clrbits_le32(glue->reg_reset0, BIT(AHB_GATE_OFFSET_USB0));
-
- if (glue->cfg->rst_bit)
- clrbits_le32(glue->reg_reset0, BIT(glue->cfg->rst_bit));
-
- clrbits_le32(&glue->ccm->ahb_gate0, BIT(AHB_GATE_OFFSET_USB0));
- if (glue->cfg->clkgate_bit)
- clrbits_le32(&glue->ccm->ahb_gate0,
- BIT(glue->cfg->clkgate_bit));
-
free(host->host);
host->host = NULL;